90208915

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 116121600

約数和(自身を除く): 25912685

約数列:

[1, 5, 31, 53, 79, 139, 155, 265, 395, 695, 1643, 2449, 4187, 4309, 7367, 8215, 10981, 12245, 20935, 21545, 36835, 54905, 129797, 228377, 340411, 581993, 648985, 1141885, 1702055, 2909965, 18041783, 90208915]

約数ペア:

[(1, 90208915), (5, 18041783), (31, 2909965), (53, 1702055), (79, 1141885), (139, 648985), (155, 581993), (265, 340411), (395, 228377), (695, 129797), (1643, 54905), (2449, 36835), (4187, 21545), (4309, 20935), (7367, 12245), (8215, 10981)]